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The cornerback suffered a leg injury while preparing for camp, a league source told CBSSports.com's Jason La Canfora. The injury could involve a broken bone in his leg, according to the source, with the rookie possibly missing most or all of camp.

According to La Canfora, the Bengals declined comment on the matter, citing coach Marvin Lewis' policy of not discussing injuries prior to the start of camp.

Kirkpatrick sent out the following tweet late Tuesday:

I'm sorry about my injury and im going to try my best to get back and help
the team to get to a Super Bowl and once again I'm sorry #WhoDey

This is a big blow for a Bengals team that expected an instant contribution
from the former Alabama standout, selected 17th overall in April's draft. With
Bengals cornerback Leon Hall coming off a torn Achilles, Kirkpatrick had an
opportunity to start right away.